Have used this system for three years it works great. The cold water gets warm but flushes out in less than a min. I re-piped my home and installed a recirc pipe now the cold stays cold.If you have distant sinks that never get warm while you wash your hands this is the solution, with out the need (and cost) of a dedicated recirc line.

What pump type is needed to return to high water pressure after step down?

High rise office building. Stepping down pressure in a high pressure condenser loop to protect control equipment. Need pump to return to high pressure. Recommendations for step down regulator and subsequent pump?

The pump must be sized to the lift or head. How far to the highest point of the loop? What is the design volume of the system? Most condenser loops use centrifugal pumps.The Regulator must be sized for the highest volume expected for the equipment being cooled. You will also need to understand the wetted surface requirements of the cooling tower, it may be necessary to use a bypass if this is the only unit on this loop.You might want to look at another design for your system, like changing out controls to handle the head pressure of the existing loop, or if this is the only unit needing lower pressure on this loop install a secondary loop with a heat ex-changer.I hope this gives you some ideas.

how do i change the barings in a waterpump

Different pumps use different methods, small pumps like Armstrong and Bell and Gossett have kits with the parts but in most cases I would recommend their Seal bearing assembly they are easy to install even with limited experience.Larger 1 HP plus pumps must be disassembled the new bearings pressed into the housing and new seals installed. This is very technical and should only be done by persons with good mechanical skills. I hope this helps.

how do you program the up 15 hot water pump

The pins on the face of clock allow you to easily set the on time in 15 min increments by pushing the pins into the on position. I set it to turn on 1/2 hour before I need it with all the pins on for a hour, then alternate it on and off till the next off period.